Update Typo

docs/tutorial/6-viewsets-and-routers.md

@@ -59,7 +59,7 @@ To see what's going on under the hood let's first explicitly create a set of vie
 
 In the `urls.py` file we bind our `ViewSet` classes into a set of concrete views.
 
-    from snippets.resources import SnippetResource, UserResource
+    from snippets.views import SnippetViewSet, UserViewSet
 
     snippet_list = SnippetViewSet.as_view({
         'get': 'list',